linux-kernel - Re: [GIT PULL] adaptive spinning mutexes

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Message-ID: <ac3eb2510901141350x16c0f67cp46376e57062eaef9@mail.gmail.com>
Date:	Wed, 14 Jan 2009 22:50:59 +0100
From:	Kay Sievers <kay.sievers@...y.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, a.p.zijlstra@...llo.nl,
	paulmck@...ux.vnet.ibm.com, ghaskins@...ell.com, matthew@....cx,
	andi@...stfloor.org, chris.mason@...cle.com,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-btrfs@...r.kernel.org, tglx@...utronix.de, npiggin@...e.de,
	pmorreale@...ell.com, SDietrich@...ell.com,
	dmitry.adamushko@...il.com, hannes@...xchg.org
Subject: Re: [GIT PULL] adaptive spinning mutexes

On Wed, Jan 14, 2009 at 22:41, Ingo Molnar <mingo@...e.hu> wrote:
>
> * Ingo Molnar <mingo@...e.hu> wrote:
>
>> > You just disproved your own case :(
>>
>> how so? 80% is not enough? I also checked Fedora and it has
>> SCHED_DEBUG=y in its kernel rpms.
>
> Ubuntu has CONFIG_SCHED_DEBUG=y as well in their kernels.

$ cat /etc/SuSE-release
openSUSE 11.1 (x86_64)
VERSION = 11.1

$ uname -a
Linux nga 2.6.27.7-9-default #1 SMP 2008-12-04 18:10:04 +0100 x86_64
x86_64 x86_64 GNU/Linux

$ zgrep SCHED_DEBUG /proc/config.gz
CONFIG_SCHED_DEBUG=y

$ zgrep DEBUG_MUTEX /proc/config.gz
# CONFIG_DEBUG_MUTEXES is not set

Kay
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